Depends, if you buy reman most are either CST or A1/Cardone. Bad thing is some are only getting rebuilt CVs but reason is so many come in with no joint issues and they get torn down ,inspected, cleaned, regreased and new boots. But honestly last time I bought a boot kit, it was nearly $30, a NEW axle like one that came in trunk of my new 04 GPGT2 is $79, lifetime guarantee most places. No brainier, link head abused old ones or brand new. Some reman grades specify all new joints. This is where due diligence is in order. Also investing in small trianglar file and doing some manicuring of the ends of splines can make even best new axles slide right in with minimal effort. Also don't forget a bottle of silver anti seize for alxe threads, splines and even lug nuts. Make things tighten properly. And axle nuts, snug in air, drop car till tire touches ground and torque to 100lb ft, I like to do this, set car down on wheel, use breaker bar to back off just 1/8 to 1/4 turn ,one at time and then reseat/torque lug nuts. The first time around with anti seize. Just gets it all smeared around. BUT don't slather, brush it into threads and splines. It also works well inside of spindle when replacing hubs. The greenish gold is copper based and only used on high heat bolts like exhaust or EGR.